compile zsh from scratch

install_zsh.sh

# Installs Zsh with Oh-My-Zsh without root privileges 
#
# Instructions
# 1) bash install_zsh.sh
# 2) edit .zshrc and add the path to your Zsh binary to the PATH variable
# 3) add `set-option -g default-shell <path to zsh>/bin/zsh` to `~/.tmux.conf`
#
# References: https://www.drewsilcock.co.uk/compiling-zsh
#
# ## Ncruses
#
# Ncurses is not only required for compilation. If you delete it after the installation
# the the prompt will constantly break, e.g., when using any of the arrow keys :)
# Thus, it is integrated into the Zsh installation. 
#
# ## Weird prompt and Oh-My-Zsh
# 
# When you run Zsh after installing by this script. The shell is not able to parse the default prompt
# showing a bunch of color encodings and whatnot. I have no idea why this happens. 
# Any other prompt than the default one seems to work fine. 
# Using Oh-My-Zsh also fixes this issue.
# 

ZSH_INSTALL_DIR=$HOME/services/zsh

# switch to tmp folder
mkdir tmp; cd tmp

# get ncurses
wget https://ftp.gnu.org/pub/gnu/ncurses/ncurses-6.1.tar.gz
tar -xf ncurses-6.1.tar.gz
cd ncurses-6.1

# Set cflags and c++ flags to compile with Position Independent Code enabled which we need for compiling zsh
export CXXFLAGS=' -fPIC'
export CFLAGS=' -fPIC'

./configure --prefix=$ZSH_INSTALL_DIR --enable-shared
make

# don't need this probably
#cd progs
#./capconvert
#cd ..

# probably don't need this
#export TERMINFO=/usr/share/terminfo

# test ncurses (only works with the above)
#./test/ncurses

make install
cd ..

# Tell environment where ncurses is
INSTALL_PATH="$ZSH_INSTALL_DIR"
export PATH=$INSTALL_PATH/bin:$PATH
export LD_LIBRARY_PATH=$INSTALL_PATH/lib:$LD_LIBRARY_PATH
export CFLAGS=-I$INSTALL_PATH/include
export CPPFLAGS="-I$INSTALL_PATH/include" LDFLAGS="-L$INSTALL_PATH/lib"


# Zsh

# Get zsh
git clone git://github.com/zsh-users/zsh.git

# Move into root zsh source directory
cd zsh

# Produce config.h.in, needed to produce config.status from ./configure
autoheader

# Produce the configure file from aclocal.m4 and configure.ac
autoconf

# Produce Makefile and config.h via config.status
./configure --prefix=$ZSH_INSTALL_DIR --enable-shared

make
make install

cd ..

# oh-my-zsh

# clone repository into local dotfiles
git clone git://github.com/robbyrussell/oh-my-zsh.git ~/.oh-my-zsh

cd ..

# delete tmp folder
rm -rf tmp